Improved clamp



PATENT OFFICE.

P. F. HULBERT, OF CHATHAM, NEW YORK.

IMPROVED CLAMP.

VSpecification forming part of Letters Patent No. 55,302, dated June 5, 1866.

To all whom @t may concern.'

Be it known that I, P. F. HULBERT, of Chatham, Columbia county, and State of New York, have invented a new and Improved Clamp; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable those skilled in the art to make and use the same.

The present invention relates to a new and improved clamp especially intended for and adapted to melders flasks 5 and it consistsin combining with and hanging upon the usual flask-clamp a cam-shaped lever in such a manner that when the clamp is applied .to the flask by turning the said cam-lever in the proper direction the flask will be firmly clamped and held together.

1n accompanying plate of' drawings my im proved clamp for melders flasks is illustrated, Figure l being a side View of a flask with my new clamp applied thereto, and Fig'. 2 a side view of' the clamp.

A in the drawings represents the clamp, which consists ofa straight bar of' metal, a, having at each end a short rightangular arm, b, which arms when applied to a molders flask, as shown in Fig. l, extend over the edges of the same. On one of these arms b is hung a lever-arm, c, having a rounded or cam-shaped end, d, the periphery of which may loe smooth or roughened or serrated, as may be deemed most desirable, which lever-arm, when the clamp is applied to the flask, as above explained, is turned down and toward the flask, thereby causing the clamp to tightly bind and hold the two parts or sections of' 4the flask together, as is obvious without further explanation, the circular orcam-shaped end ofthe lever-arm c hearing upon or moving over the edge ofthe flask as the lever-arm is swung down, as above explained.

To release the clamp from the flask swing the lever-arm up and away from it, when, by the movement ofits camshaped end, the clamp will be loosened sufficiently to allow it to be detached from the ask.

What I claim as new, and desire to secure by Letters Patent, is-

The combination of the angular bar A and serrated cam-lever arm c, admitting of operation to the right or left, for the purpose herein specified.

P. F. HULBERT. Witnesses G. W. LAY, H. C. LAY. 

